Powerstick
6 Programming the DSP
21
6.4.11
Low-Shelf
Definition:
lshelf [6/12] [< frequency>Hz|kHz] [<gain>dB]
Description:
Defines a low frequency shelving filter. The frequency defines the middle of the
filter.
Example(s):
lshelf 12 800Hz -5dB
# Low-Shelf filter with a slope of 12 dB
per octave at 800 Hz by -5 dB
6.4.12
Parametric EQ
Definition:
peq [Q <q>] [< frequency>Hz|kHz] [<gain>dB]
Description:
Defines a parametric EQ with frequency, Q factor and gain.
The Q factors are calculated by the ½-gain-method. The order of the instruc-
tions [Q], [ frequency] und [gain] is ignored by the DSP.
Example(s):
peq 2.5kHz Q1 -3dB
# parametric EQ at 2,5 kHz with Q1
and a level decrease by 3 dB
6.4.13
Polarity
Definition:
polarity nor/rev
phase nor/rev
Description:
Defines the polarity of the channel.
Example(s):
phase rev
# the polarity of the channel is re-
versed
